CVE-2023-5222
High PUBLISHEDViessmann Vitogate 300 Web Management Interface vitogate.cgi isValidUser hard-coded password
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0. This vulnerability affects the function isValidUser of the file /cgi-bin/vitogate.cgi of the component Web Management Interface. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-240364. NOTE: The vendor was contacted early about this disclosure but did not respond in any way. In Viessmann Vitogate 300 bis 2.1.3.0 wurde eine Schwachstelle entdeckt. Sie wurde als kritisch eingestuft. Hierbei betrifft es die Funktion isValidUser der Datei /cgi-bin/vitogate.cgi der Komponente Web Management Interface. Durch die Manipulation mit unbekannten Daten kann eine use of hard-coded password-Schwachstelle ausgenutzt werden. Der Exploit steht zur öffentlichen Verfügung.
- CVE Published
- Sep 27, 2023
- Exploitation Reported
- Oct 05, 2025
- CVSS
- 6.3 Medium
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Viessmann |
Vitogate 300
|
2.1.0 |
Affected |
| Viessmann |
Vitogate 300
|
2.1.1 |
Affected |
| Viessmann |
Vitogate 300
|
2.1.2 |
Affected |
| Viessmann |
Vitogate 300
|
2.1.3 |
Affected |
CVE References
- GitHub — Push3AX/vul github.com · Exploit https://github.com/Push3AX/vul/blob/main/viessmann/Vitogate300_Hardco...
- Technical Description — vuldb.com vuldb.com · Technical Description https://vuldb.com/?id.240364
- Signature — vuldb.com vuldb.com · Signature https://vuldb.com/?ctiid.240364
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2025-10-05 00:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-5222.yaml | Apr 25, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AV:A/AC:L/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2025-10-05 00:00:00 UTC · The Shadowserver
Proof of concept available
Recorded 2026-06-12 14:20:43 UTC · Nuclei Templates
Weaknesses (CWE)
-
Use of Hard-coded Password
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-5222.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:20 UTC about 1 month ago14:20 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC 10 months ago00:00 UTC · 10 months ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
00:00 UTC about 1 year ago00:00 UTC · about 1 year ago
Nuclei template available
Scanner coverage available
-
13:31 UTC almost 3 years ago13:31 UTC · almost 3 years ago
CVE published
Vulnerability disclosed publicly
-
08:02 UTC almost 3 years ago08:02 UTC · almost 3 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2023-5222
{
"cve_id": "CVE-2023-5222",
"title": "Viessmann Vitogate 300 Web Management Interface vitogate.cgi isValidUser hard...",
"affected_vendor": "Viessmann",
"affected_product": "Vitogate 300",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 6.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}